Veneer-slitting machine



J. C. DOZIER AND J. L. WALKER. VENEER SLITTING MACHINE. APPLICATIONHusuMArc.4 1o, 1920.

1,356,271. Paua om. 19,1920.

3 SHEETS-SHEET I.

Invenfmc Q7. 70,2126/2 Maz/2e I J. C. DOZIER AND J. L. WALKER.

VENEER SL|TT|NG MACHINE. APPLICATION FILED MAR. Io. w29.

1,356,271. Patented oct. 19,1920.

3 SHEETS-SHEET 2.

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I; C. DDZIER AND I. L. WALKER, VENEER sumNG MAcHlNE.- APPLICATION FILEDMAR. I0, 1920.

1,356,271. Patented oet. 19,1920. y

3 SHEETS-SHEET 3.

4 V@ ff CIZ. MaI/fell UNITED STATES ,PATENT OFFICE.

JAivins c. noziER AND rosErH L. wALKnitoF BAToN ROUGE, LLOUISIANAVENEER-SLITTING MACHINE.

Specification of Letters Patent. Patented Oef. 19, 192(k) i Applicationled March 10, 1920. Serial No. 364,839. f

Slitting Machines, of which the following is a specification.

This invention relates to certain new and useful improvements inmachines for slittin@ veneer oil thin matei'ial into stri s.

lhe present invention is designed primarily as an improvement upon themachine for this purpose which forms a subject matter of Patent No.1,234,884@ granted to us July 31,1917. j

The construction shown in the aforementioned patent while most eflicientfor the purposes for which it has been employed, has been found to becapable of improvement to meet new requirements, such for instance asdividing three-ply veneer which requires more powerful feed than can beobtained from the construction shown in the said patent. In slittingthree-ply veneer it is very desirable, if not absolutely necessary, thatthe stock bek cut oirboth sides simultaneously.

rlhe present invention has for apprimary object the dispensationk of thebed plate or; table employed in the construction shown in the priorpatent, and in so constructing and arranging the bottom yknife holder,orholders, lthat the upper end or ends thereof shall furnish all" thebed plate that is necessary to support the material against the cut ofythe upper knife or knives. This greatly simplifies the construction andenables us to econoniize space and to provide better support for theknife bars, which support serves to materially strengthen` the framingof the machine.

We aim further at the improvements in the details of constructionwhereby provision is made for adjusting the heads or knife holders toany width, as circumstances may ieiiire.

ther objects and advantages ofthe invention will hereinafter appearV andthe novel features thereof will be-particularly pointed out in theappended claims.k

The invention, in its preferredl form, is clearly illustrated in the'accompanying drawings, which, with the numerals of reference markedthereon form a part of this specification and in which:

Figure 1 is aside elevation of our improved veneer slitting machine.

Fig. 2 is a substantially central vertical longitudinal section throughthe same.

Fig. 3 is an enlarged vertical longitudinal section through the knivesand their holders withl portions of the adjacent feed rolls broken away.f i

Fig. 1- is an end view of one of the knife holders and knife,V withportions broken away. f

Fig. 5 is a vertical'section through one of the knife holders showingthe knife cap in position.

Fig. 6 is a rdetail in elevation with portions broken away, lookinginthe direction of the line of feed of the material to be slit.

Fig. 7 is a sectionl taken 'at right angles to Fig. 5.

Fig. 8 is an end elevation with portions broken away. f

Fig. 9 is a top plan.

Like numerals of reference indicate like parts throughout the differentviews.

j Referring to the drawings, 1 designates abcd or base of any suitable`character supported in any desired way as by the legs or supports 2,the same being of substantial construction so as to `firmly support theopperating vparts nowto be described.

As before noted in the present construction, we employ no table or bedplate for the support ofthe material being acted upon, but in lieuthereof we support the knife holders and their accessories intermediaterthe center feed rolls and have the upper end of the bottom knife holderserve in lieu of such'table or bed plate. For this purpose we providethe castings or standards 3 which are irmly bolted or otherwise aixed tothe base 1 and to the top housing 4 as clearly shown in Figs. 1 and 2.

5 are guide rods mounted inthe top housing or cap plate 4 and inthe base1, and these rods serve to supportthe tubular bearings 6 and 7 for theupper and lower sets of feed rolls as will be clearly understood uponreference to Fig. 2. The lower bearings may be adjusted vertically bymeans of the 'nuts 8 having threaded engagement with the screw-threadedportions of the rods 5, as seen in Fig. 2, while adjustable on the upperthreaded portions of these rods are the j nuts 9, see Figs. 1 and 2,between which and shoulders 10 on the tubular bearings are springs 11,as shown in Figs. 1 and 2, it being readily understood that thecompressive elfort of these springs -Inay be regulated or adjusted bymeans of said nuts as circumstances may require.

Journaledinthe upper and lower| bearings 6 and 7 are shafts 12 and 13,respectively, see Fig. 2, and each of these shafts carries a feedroller, the rollers 14and 15 constituting the upper feed rolls, and therollers and 1T constituting the lower feed rolls, it beingnotedthat-there are two pairs of such feed rolls upon opposite sides of thecentral vertical line of the machine,vso that there will `be fourrollers upon each side ,of the point where the knives are located.

rThese feed rollers may be actuated in any suitable way, thisconstruction not forming apart .of the present invention although wehave shown a convenient way of .imparting motion to these feed rolls.Such arrangement is shown in Figs. 1, 2, 8 and 9, wherein it will beseen that the shafts 18 and 1S) project beyond the top housing or capplate 4 and are mounted in suitable bearings 20 on the base 1, the shaft1S being shown as provided with a pulley 21 to be revolved from anysuitable source of power, while upon the said shaft 1S is -a gear 22meshing with a larger gear 23 on the shaft 13 and this in turn meshingwith a `large gear 24 on the upper shaft 12, .see Fig. 2, while upon theshaft 19 .is a gear 25 meshing with a large gear 26.011 the shaft 13 ofthe other set of feed rolls and these in turn meshing with a gear 27 onthe upper shaft 12 of one of the feed rolls.

At the other end-.of the machine similar gearing is provided, as seen inFigs. 1, 8

`and 9, wherein 28 is a gear .on the shaft A1S .meshing with the gear 29on the shaft 13 of the lower roll, which, in turn meshes with the gear30 on the shaft 12 of the upper .feed roll. The shaft 19 carries a gear31 .meshing with a gear 32 on the shaft 13V ofthe lower roll and this inturn is in mesh with a gcar on the shaft 12 of one of the upper -feedrolls.

The shafts 18 and 19 carry the sprocket wheels34 and 35,y respectively,as seen best in F 1, and around these passes Athe sprocket chain 36 asseen in Figs. 1 and 9, whereby motion is simultaneously imparted to thetwo sets of ,upper and lower feed rolls. 1t is evident, however, thatany other suitable formfof gearing may be employed for imparting thedesiredmotion to the feed rolls.

Itis to be ,understood `that the invention is in noV wise restrictedtoythe number of knives employed, the number depending upon thecharacter of the work and the size or desired capacity of the machine.rfhe construction, disposition and arrangement of the knives being thesame, a detailed description of one set, upper and lower, is deemedsuiicient.

' Referring to Figs. 2 and 3, 37 is the upper knife bar and 38 the lowerknife bar. These are secured to the castings or standards 3 in anysuitable manner as by bolts or the like 39, itbeing noted that theseknife bars or heads are supported in opposition to each other, leaving aspace 40-therebetween, as seen best in Fig. 3, for the passage of thestock or material 41 to be slitted by the knives, and the upper face 42ofthe lower knife bar constituting a rest or support for thematerial inits passage through the machine, as will be clearly understood byreference to Figs. 2 and 3, so that the material `is supported againstthe cut of the upper knife or knives during its passage through themachine.

43 is the upper knife holder and 44 thc lower knife holder. These knifeholders have dovetailed engagements as at 45 with the knife heads orbars, as seen clearly in Figs. 2,and 3, the upper end of the upperholder havingtheprojecting lug 46 and the lower holder having theprojecting lug 47 forthe reception of screws or `the like 4S, as seenclearly in Fig. 3, thus permitting the knifeholders yto beadjustedlengthwisc of theknife barsfand held insuch adjusted ,positionby means of the set screws or the like 4S.

49 istheupper slitting knife and 50`is the lower slitting knife. Eachknife-.is provided with a longitudinal slot 51 for the reception of abolt 52 provided with a nut thus .permitting vertical adjustment of theknife.

54 isa knife cap bearing against the knife and against whichthe nut'bears, it being understood that the bolt 52 passes through said capaswill be readily7 seen-upon reference to Fig. 7. It will be evident thatprovision `is thus made for the adjustment of the knives to and fromeach other as circumstances may require. Upon reference to Fig. 3 itwill also be observed that the upper `and lower knives are disposed inangular position with relation to each other instead of being disposedsubstantially vertically, rin ordei1 to give better results and acleaner cut to thematerial.

It Aisthought that the operationof the machine will be readilyunderstood from the foregoing and that a further-detailed descriptionthereof is not necessary. Fig. 3 illustrates the passage of the materialthrough the machine the same being supported upon the -upper face of thelower knife bar and the material being firmly gripped and reliably fedthrough the machine by means of the two sets of upper and lower feedrolls,

Modifications in detail, proportions and relative arrangement of partsmay be resorted to without departing from the spirit of the invention orsacrificing any .of its advantages.

that is claimed as new is:

l. In a veneer slitting machine, a supporting frame, feed mechanism,upper and lower slitting means and upper and lower slitter-carryingmeans supported in opposition to each other with a space therebetweenfor the passage of the material to be slitted, the upper face of thesaid last-named means constituting the only support for the material inits passage between the upper' and lower slitting means.

2. In a veneer slitting machine, a supporting frame, feed mechanism,upper and lower slitting means and upper and lower slitter-carryingmeans supported in opposition to each other with a space therebetweenfor the passage of the material to be slitted, the upper face of thesaid last-named mea-.ns constituting the only support for the materialin its passage between the upper and lower slitting means, said slittingmeans being angularly adjustable to and -from each other.

3. In a veneer slitting machine, a support, feed mechanism, independent,spacedapart upper and lower slitting means, the lower head thereofconstituting the only supper". for the material against the cut of theupper slitter and forming a guide for such material.

4. In a veneer slitting machine, a base, a top housing, uprightsconnecting the same and upper and lower slitting knives and knife-barsconnecting and supported from said uprights, the upper face of the lowerknife-bar forming the only support for the material as it is slitted bythe said slitting knives. p

5. In a veneer slitting machine, a support, upper and lower slittingknives, feed rollers upon opposite sides of said knives, the upper endof the lower knife head forming the only support for the strip ofmaterial passed between said knives against the cut of the upper knife.

G. In a veneer slitting machine, a support, independent spaced-apartupper and lower slitting knives, and feed rollers in multiple uponopposite sides of said knives, the upper end of the lower knife headserving as the only support for the material against the cut of theupper knife.

7. In a veneer slitting machine, a support, upper and lower slittingknives, and feed rollers in multiple upon opposite sides of said knives,the upper end of the lower knife head serving as a bed plate to supportthe material against the cut of the upper knife, said yupper and lowerknives being adjustable vertically and transversely.

8. In a veneer slitting machine, a support, upper and lower slittingknives, and feed rollers in multiple upon opposite sides of said knives,.the upper end of the lower knife head serving as a bed plate to supportthe material against the cut of the upper knife, said upper and lowerknives being adjustable vertically and transversely independently ofeach other.

9. YIn a veneer slitting machine, a frame embodying standards, knifeheads extended transversely of the frame and connecting said standards,and upper and lower slitting members carried by said heads and disposedsubstantially vertically to act upon opposite faces of the material, theupper end of the lower knife head forming a bed plate for the support ofthe material to be slitted.

1.0. In a veneer slitting machine, a frame embodying standards, knifeheads extended transversely of the frame and connecting said standards,upper and -lower slitting members carried by said heads and disposedsubstantially vertically to act upon opposite 'fa-Ces of the material,the upper end of the lower knife head forming a bed plate for thesupport of the material to be slitted, and feed rollers upon oppositesides of the knives, the said bed plate being the only support for thematerial between the rollers.

l1. In a veneer slitting machine, a frame embodying standards, membersjoining the opposed standards and bracing the same, upper and lowerknives disposed substantially vertically and disposed in angularposition with relation to each other, the upper end of the lower knifesupport constituting the only bed plate for the support of the materialwhile it is being slitted.

In testimony whereof we ailix our signa tures.

JAMES C. DOZIER. JOSEPH L. YVALKER.

